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Illumos 5562 - ZFS sa_handle's violate kmem invariants, debug kernels panic on boot

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5562 ZFS sa_handle's violate kmem invariants, debug kernels panic on boot
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Robert Mustacchi <rm@fingolfin.org>
Reviewed by: George Wilson <george@delphix.com>
Reviewed by: Rich Lowe <richlowe@richlowe.net>
Approved by: Dan McDonald <danmcd@omniti.com>

References:
  https://www.illumos.org/issues/5562
  https://github.com/illumos/illumos-gate/commit/0fda3cc5

Ported-by: DHE <git@dehacked.net>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3388
This commit is contained in:
Justin T. Gibbs 2015-01-09 19:45:41 -07:00 committed by Brian Behlendorf
parent 252e1a54ab
commit 63b33e878a
1 changed files with 6 additions and 14 deletions
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20
module/zfs/sa.c
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@ -210,13 +210,6 @@ sa_cache_constructor(void *buf, void *unused, int kmflag)
{
sa_handle_t *hdl = buf;
hdl->sa_dbu.dbu_evict_func = NULL;
hdl->sa_bonus_tab = NULL;
hdl->sa_spill_tab = NULL;
hdl->sa_os = NULL;
hdl->sa_userp = NULL;
hdl->sa_bonus = NULL;
hdl->sa_spill = NULL;
mutex_init(&hdl->sa_lock, NULL, MUTEX_DEFAULT, NULL);
return (0);
}
@ -226,7 +219,6 @@ static void
sa_cache_destructor(void *buf, void *unused)
{
sa_handle_t *hdl = buf;
hdl->sa_dbu.dbu_evict_func = NULL;
mutex_destroy(&hdl->sa_lock);
}
@ -1369,14 +1361,11 @@ sa_handle_destroy(sa_handle_t *hdl)
mutex_enter(&hdl->sa_lock);
(void) dmu_buf_remove_user(db, &hdl->sa_dbu);
if (hdl->sa_bonus_tab) {
if (hdl->sa_bonus_tab)
sa_idx_tab_rele(hdl->sa_os, hdl->sa_bonus_tab);
hdl->sa_bonus_tab = NULL;
}
if (hdl->sa_spill_tab) {
if (hdl->sa_spill_tab)
sa_idx_tab_rele(hdl->sa_os, hdl->sa_spill_tab);
hdl->sa_spill_tab = NULL;
}
dmu_buf_rele(hdl->sa_bonus, NULL);
@ -1410,10 +1399,13 @@ sa_handle_get_from_db(objset_t *os, dmu_buf_t *db, void *userp,
sa_handle_t *winner = NULL;
handle = kmem_cache_alloc(sa_cache, KM_SLEEP);
handle->sa_dbu.dbu_evict_func = NULL;
handle->sa_userp = userp;
handle->sa_bonus = db;
handle->sa_os = os;
handle->sa_spill = NULL;
handle->sa_bonus_tab = NULL;
handle->sa_spill_tab = NULL;
error = sa_build_index(handle, SA_BONUS);